Energy Density Improvement for Superconducting Flywheel Using Structure Optimization

This paper investigates methods to increase the energy storage density of superconducting flywheels. The circumferential and radial stresses suffered by the three flywheel models at the same speed are analyzed and compared. The maximum energy storage densities that can be achieved by these models are calculated. Unequal thickness layering and applying compressive stress to the outermost layer can effectively improve the energy storage density of superconducting flywheels.